GET FILE

How to backup the existing firmware of your Sony XPERIA Z C6603

• 1-To not to lose the warranty of your phone here is the first thing you need to do, which is to backup the original customization of your phone.
• 2-Now Download the Sony Update Service (SUS) and reinstall the firmware of your phone ( backup your data).
• 3-Now got SUS folder in the Program Filesdb*somenumber* lob_fs, now search for the files whose names are starting with FILE.
• 4-Now download and install the flashtool for windows (Download1, Download2, Download3, Download4), Linux( Download1, Download2), Mac (Download1, Download2).
• 5-Now copy the files whose name start with FILE, from blob_fs folder to folder „Firmware“ included in the XPERIA Flashtool.
• 6-Now Open Flashtool, Click Advanced, choose the decrypt files and choose all three files and put them on the right column.
• 7-Now click ok and then a popup will appear after some time via flashtool. 
• 8-Now click ok as you have placed the required files so now the flashtool will create the backup of your existing firmware so you can flash your phone now.

• 1-To Unlock Your Sony Xperia Z C6603,First download and install the flashtool for windows (Download1, Download2, Download3, Download4), Linux( Download1, Download2), Mac (Download1, Download2).
• 2-After installation start flashtool and click BLU button on the top.
• 3-Now turn off your phone and then a pop-up window will appear saying "Connect usb port with you PC and press the volume down button on your smartphone.
• 4-Now click on the button saying get unlock button, it will open the Sony mobile official website.
• 5-Now copy the IMEI code from flashtool into the Sony mobile website then it will send you a unlock code for your mobile phone via email.
• 6-Now copy the unlock code into flashtool and click unlock. 
• 7-Now connect your phone with your PC with holding the volume up button when shows a pop-up window.
• 8-Now wait for the unlock to finish.

• 1-First of all make sure which version you need to install and you know the version of your phone.
• 2-To flash new firmware on your Sony Xperia Z C6603,First download and install the flashtool for windows (Download1, Download2, Download3, Download4), Linux( Download1, Download2), Mac (Download1, Download2).
• 3-Now download the latest firmware which are mirrors from Google Drive or Mega For Sony XPERIA Z C6603.
  More Downloading Links with versions
  10.4.B.0.569 Singapore
  10.4.B.0.569 Commercial and Journalists
• 4-Now click on the flash mode button and select the folder where you have download the .ftf file but before pressing the flash button make sure you have saved all of your required data separately.
• 5-Now turn your phone off and when the pop-up window appears press the volume down button and the flash of firmware will start.
• 6-After few minutes the flashing will be complete and you will be asked to turn your phone on so here you go you have your firmware installed on our Sony XPERIA Z C6603. 

How to install Android 4.2.2 for Sony Xperia Z C6603 with firmware 10.3.1.A.2.67

• 1-To re-lock the boot loader of your Sony Xperia Z C6603,First download and install the flashtool for windows (Download1, Download2, Download3, Download4), Linux( Download1, Download2), Mac (Download1, Download2).
• 2-Start Flashtool and lock the BLU button on top of the software.
• 3-Now turn off your phone and plug-in when the pop-up window will appear.
• 4-Now just click the re-lock button and your phone bootloader is re-locked.